class_docstr: Object representing a set of rows by keeping a list of RowKeys and
  RowRanges that the set consists of.
code: def __repr__(self) -> str:
      return (
          core_ops.bigtable_print_row_set(self._impl)
          .numpy()[0]
          .decode()
      )
  
file_path: io/tensorflow_io/python/ops/bigtable/bigtable_row_set.py
imports: from tensorflow_io.python.ops import core_ops
  from tensorflow_io.python.ops.bigtable import bigtable_row_range
  from typing import Union
label_desc: Use image node_id 2 for calling the RowSet obj's underlying member method code with example usage: obj.__repr__() and returns: core_ops